The crown wore by Sansa Stark in the final episode of Game of Thrones references the outfit that Robb Stark wore during his last moments.

Of all the horrible, heartbreaking events Game of Thrones has put us through, the Red Wedding remains the most difficult to watch. Robb Stark was the great hope that one day the Lannisters would pay and Ned Stark's death would be avenged. All those hopes were wiped out in a single moment as the Freys and the Boltons orchestrated a horrifying act of treachery.